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Finding the Fourth Proportional to 70,951.50, 106,424.28 and 17,643.51

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Solution

The fourth proportional to 70,951.50, 106,424.28 and 17,643.51 is: 26,464.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.50 : 106,424.28 = 17,643.51 : x
  2. Step 2: Convert to fraction form
    70,951.50/106,424.28 = 17,643.51/x
  3. Step 3: Cross multiply
    70,951.50x = 106,424.28 × 17,643.51
  4. Step 4: Simplify right side
    70,951.50x = 1,877,697,848.42
  5. Step 5: Solve for x
    x = 1,877,697,848.42/70,951.50
  6. Step 6: Final answer
    x = 26,464.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.